325/40R18 M&H Racemaster Blackwall Drag Tire
M&H Drag Radials are DOT approved, and have a compound that works well with high performance street cars. Available in many sizes to fit everything from stock street cars to tubbed drag cars, the M&H drag radial line offers great traction on the street and the track. M&H drag radials are also available for late model performance cars with large brakes (such as Cobra, Corvette, Camaro, Challenger), with sizes to fit 16, 17 and 18-inch wheels. M&H Racemaster tires are made in the USA for drag racing and street car applications. Also check out the Drag Radial Front Runners.
Blackwall Tire
Since the introduction of carbon black rocked the tire industry, the original recipe for most tires has been a solid black sidewall. For classics and collector cars alike, it's hard to beat the no-nonsense appeal of a classic blackwall style tire. British sports car, classic truck and even hot rod enthusiasts love the way a nice period correct blackwall tire looks on their vehicles.
M&H Racemaster Drag Race Tires
The M&H Racemaster tire brand has deep roots in the drag racing world, and offers numerous modern drag racing tires, from DOT approved drag radials to 17 " front runner tires for use on modern muscle cars with big brakes. M&H Racemaster also offers period correct slicks for Nostalgia Super Stock cars, Nostalgia Funny Cars, Nostalgia Top Fuel Dragsters, gassers, hot rods and much more.
Please Note
- Tire mounted on wheel for demonstration purposes only. Wheel and other accessories are not included. Please note that dimensions listed (tread width, section width and overall diameter) are non-scientific and based on an inflated tire, mounted to a wheel. Dimensions may vary due to rim width and inflation pressure.
| SKU | ROD22 |
|---|---|
| Weight | 28.000000 |
| Radial Aspect Ratio | 40 |
| DOT Certified | DOT Certified |
| Brand | M&H Racemaster |
| Tire Series | Drag Radial |
| Rim Diameter | 18 inch |
| Tire Construction | Radial |
| Sidewall Style | Blackwall |
| Drag Tire Type | Street | DOT |
| Drag Radial Sizes | 325/40R18 |
| Max Load Capacity (LBS) | 1640@35 psi |
| Product Size | 325/40R18 |
| Section Width (IN) | 12.8 |
| Rim Width (in) | 12 |
| Overall Diameter (IN) | 28 |
| Availability Date | 2026-03-16T00:00:00Z |
325/40R18 M&H Racemaster Blackwall Radial Drag Tire
M&H Radial Drag Rear | 325/40R18
Purchase Considerations â–¼
The tire is designed for an 18-inch wheel, but matching the diameter alone does not guarantee compatibility. Buyers should verify that their wheel width falls within the tire manufacturer's approved range and that the existing setup provides sufficient clearance.
Before ordering, compare the tire's specifications with the vehicle's current wheel and tire setup. The available space around the suspension, inner wheel well, and fenders should also be checked to avoid interference after installation.
A radial drag tire is designed with drag-racing performance in mind, so buyers should not automatically treat it as an all-purpose replacement for a conventional street tire. Its suitability for everyday driving depends on the manufacturer's intended-use guidance, approved operating conditions, and any applicable road-use requirements.
Buyers who frequently commute or undertake long highway journeys should confirm the tire's road legality, speed rating, and operating limitations before purchasing. If everyday versatility is the priority, a road-focused performance tire may be a more appropriate option.
The 325 section width gives this tire a broad profile, while the 40-series aspect ratio indicates that its nominal sidewall height is 40% of its section width. This combination can create a wider, more performance-oriented rear appearance when compared with a narrower or taller-profile tire.
However, the actual change in stance depends on the dimensions of the tires being replaced, wheel width, and available body clearance. Buyers should compare the new tire's overall diameter and width with their current setup to understand how it may affect the wheel-well fit and the vehicle's visual proportions.
The right choice depends on how often the vehicle is used at the drag strip and the type of performance the buyer wants to prioritize. Someone building a dedicated drag-racing setup may value a tire specifically designed for drag-strip traction, whereas a driver who participates occasionally may need to balance that objective with everyday usability.
Before purchasing, buyers should review the tire's intended application, operating requirements, and compatibility with their vehicle's power and setup. They should also consider whether a dedicated drag tire fits their actual usage pattern rather than selecting one solely for its aggressive appearance or racing-oriented design.
Fitment & Compatibility â–¼
The M&H Radial Drag Rear 325/40R18 is designed primarily to improve rear traction, but changing tire size can influence overall vehicle behavior. A wider rear tire increases the available contact patch, which can improve acceleration grip, especially on high-powered vehicles. However, tire size changes may affect the balance between front and rear handling characteristics.
Drivers may notice differences in cornering response, traction behavior, and how the vehicle transfers power. The M&H Radial Drag Rear 325/40R18 should be matched with an appropriate front tire setup to maintain predictable handling. Vehicle alignment, suspension tuning, and tire pressure adjustments can also influence the final driving feel.
Whether the M&H Radial Drag Rear 325/40R18 fits without modifications depends on the specific vehicle, wheel package, and existing suspension configuration. Performance cars with factory or aftermarket rear wheel wells may have different available space, especially when wider tires are installed compared with original equipment sizes.
Before installation, measure available clearance at the fender edges, inner suspension areas, and wheel tubs. Consider clearance changes caused by suspension compression, vehicle loading, and driving conditions. The M&H Radial Drag Rear 325/40R18 is a specialized performance tire, so confirming physical fitment before mounting helps prevent installation problems.
Tire Size Equivalents & Conversions â–¼
The M&H Radial Drag Rear 325/40R18 is a wide performance-oriented tire size intended for vehicles requiring increased rear traction. Compared with narrower rear tires, the 325mm section width provides a larger potential contact area, which can help high-powered vehicles improve acceleration grip. However, the additional width also requires more wheel and body clearance.
When comparing the M&H Radial Drag Rear 325/40R18 to another size, consider differences in overall diameter, sidewall height, and intended application. A taller or shorter tire can change gearing feel, vehicle stance, and speedometer readings. Proper comparison requires evaluating the complete tire and wheel combination.
When converting to the M&H Radial Drag Rear 325/40R18, consider changes in width, diameter, sidewall height, and vehicle behavior. A larger rear tire can alter the vehicle’s stance, acceleration feel, gearing effect, and speedometer accuracy. These changes should be evaluated before installation to confirm the tire matches the vehicle’s goals.
Additional considerations include wheel compatibility, rear suspension clearance, and how the wider tire affects handling balance. The M&H Radial Drag Rear 325/40R18 is intended for performance applications, so ensuring the complete tire, wheel, and vehicle combination works together is important for achieving reliable results on both street and track environments.
Installing a wider tire than recommended can increase steering effort, create clearance concerns, and alter tracking characteristics. A narrower tire may change appearance and contact patch behavior. Tire selection should balance classic appearance with practical road performance.
Performance & Use Case â–¼
The M&H Radial Drag Rear 325/40R18 is specifically designed for performance vehicles that require strong rear traction for drag racing applications while still offering DOT-approved street capability. This makes it a practical option for enthusiasts who drive their vehicles on the street but also participate in track events.
The tire’s performance advantage comes from its drag-focused construction and compound characteristics, which are intended to improve power transfer during acceleration. However, drivers should understand that drag-oriented tires have different priorities than all-purpose street tires. Wet conditions, daily driving demands, and vehicle setup should all be considered when choosing this tire.
The M&H Radial Drag Rear 325/40R18 is designed to help performance vehicles improve acceleration by increasing available rear traction. The wider tread section provides a larger contact area, allowing vehicles with significant power output to better transfer torque to the pavement during launches.
Actual launch performance depends on more than tire size alone. Suspension setup, drivetrain configuration, vehicle weight, track surface, and tire pressure all influence results. The M&H Radial Drag Rear 325/40R18 can support stronger acceleration performance when correctly matched with the rest of the vehicle, but proper tuning remains essential for achieving consistent results.
The M&H Radial Drag Rear 325/40R18 is best suited for performance enthusiasts who prioritize rear-wheel traction, acceleration, and drag racing capability. It is designed for vehicles that need additional grip during hard launches and high-performance driving situations where conventional street tires may struggle.
While the tire is DOT approved for street use, owners should consider that performance-focused drag radials have specific operating characteristics. Weather conditions, road surfaces, inflation pressure, and driving style all affect performance. The M&H Radial Drag Rear 325/40R18 is most effective when used on a properly prepared vehicle with realistic expectations for street and track performance.
Construction, Durability & Load Capacity â–¼
The M&H Radial Drag Rear 325/40R18 uses a performance-focused compound designed to provide increased grip for high-powered vehicles. The compound characteristics are intended to help the tire maintain traction during hard acceleration, making it suitable for drag racing applications and performance street cars that require additional rear-wheel grip.
Traction results depend on more than the tire compound alone. Vehicle weight transfer, suspension tuning, drivetrain power delivery, road surface, and inflation pressure all affect how effectively the M&H Radial Drag Rear 325/40R18 performs. A properly prepared vehicle allows the tire to work more effectively and consistently.
The M&H Radial Drag Rear 325/40R18 is engineered to provide strong traction performance while maintaining DOT-approved street capability. Its design focuses on helping performance vehicles achieve improved acceleration grip without requiring a dedicated non-street racing tire.
Durability depends on usage conditions, vehicle setup, alignment, tire pressure, and driving habits. Frequent hard launches, track sessions, and aggressive driving will naturally affect wear compared with normal street use. Owners choosing the M&H Radial Drag Rear 325/40R18 should consider their driving goals and maintain the tire properly to achieve reliable performance.
Installation & Maintenance â–¼
Before installing the M&H Radial Drag Rear 325/40R18, verify that the tire is compatible with the vehicle’s wheel size, rear suspension setup, and available clearance. The wide 325mm section width requires careful inspection of fender clearance, inner wheel space, brake components, and suspension movement. Proper wheel selection is essential for achieving the intended performance and appearance.
Owners should also inspect the overall tire and wheel combination before final mounting. Check clearance during normal ride height and through suspension compression because interference may not appear while the vehicle is stationary. Confirming fitment before installation helps prevent rubbing issues and ensures the M&H Radial Drag Rear 325/40R18 performs as designed.
Wheel width plays an important role in how the M&H Radial Drag Rear 325/40R18 maintains its intended shape and performance characteristics. A properly matched wheel allows the tire’s tread and sidewall to work correctly, helping maintain traction, stability, and predictable handling behavior.
Using a wheel that is too narrow or too wide can alter the tire profile and affect contact patch behavior. Before installing the M&H Radial Drag Rear 325/40R18, confirm that the wheel dimensions match the vehicle application and tire requirements. Correct wheel sizing helps maximize traction while reducing potential fitment or handling concerns.
Maintaining the M&H Radial Drag Rear 325/40R18 requires attention to tire pressure, visual inspections, wheel condition, and vehicle alignment. Monitoring these factors helps maintain consistent traction, predictable handling, and proper wear patterns. Performance tires often respond noticeably to changes in setup, making regular checks important.
Owners should inspect the tire before demanding use, especially after track events or aggressive driving sessions. Checking for unusual wear, damage, or pressure changes helps identify potential issues early. A properly maintained M&H Radial Drag Rear 325/40R18 can provide reliable performance for enthusiasts who understand its drag-focused design and intended operating conditions.